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LOWER BOUNDS ON LP QUASI‐NORMS AND THE UNIFORM SUBLEVEL SET PROBLEM
- Source :
- Mathematika. 67:296-323
- Publication Year :
- 2021
- Publisher :
- Wiley, 2021.
-
Abstract
- Recently, Steinerberger proved a uniform inequality for the Laplacian serving as a counterpoint to the standard uniform sublevel set inequality which is known to fail for the Laplacian. In this paper, we observe that many inequalities of this type follow from a uniform lower bound on the $L^1$ norm, and give an analogous result for any linear differential operator, which can fail for non-linear operators. We consider lower bounds on the $L^p$ quasi-norms for $p<br />42 pages, 1 figure, supersedes arXiv:2005.09407: main theorems strengthened and surrounding discussion presented in a much different context
Details
- ISSN :
- 20417942 and 00255793
- Volume :
- 67
- Database :
- OpenAIRE
- Journal :
- Mathematika
- Accession number :
- edsair.doi.dedup.....b0ec0e81adb972b03efd4e77621510cb